The product is a Nintendo Joy-Con set for the Nintendo Switch in Neon Red and Neon Blue colors. It includes both a left and right Joy-Con controller, designed by Nintendo. This Joy-Con set is compatible with the Nintendo Switch gaming console.
Left Joy-con has issue with SL button and therefore cannot be used on the Switch as a standalone controller. This is the exact issue I was trying to resolve by purchasing new controllers.
Right Joy-Con works without issue.
No obvious wear and tear. However, with the one controller being unusable by itself I can't recommend.